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CN106458361A - Opening device and apparatus for moulding an opening device on a sheet packaging material - Google Patents

Opening device and apparatus for moulding an opening device on a sheet packaging material Download PDF

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Publication number
CN106458361A
CN106458361A CN201580022724.9A CN201580022724A CN106458361A CN 106458361 A CN106458361 A CN 106458361A CN 201580022724 A CN201580022724 A CN 201580022724A CN 106458361 A CN106458361 A CN 106458361A
Authority
CN
China
Prior art keywords
wall
shedding motion
base portion
diapire
spout
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201580022724.9A
Other languages
Chinese (zh)
Other versions
CN106458361B (en
Inventor
丹尼尔·戈尔菲耶里
弗朗哥·卡尼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of CN106458361A publication Critical patent/CN106458361A/en
Application granted granted Critical
Publication of CN106458361B publication Critical patent/CN106458361B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • B65D5/746Spouts formed separately from the container
    • B65D5/747Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344Moulding in or through a hole in the article, e.g. outsert moulding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/506Rigid or semi-rigid members, e.g. plugs
    • B65D17/507Rigid or semi-rigid members, e.g. plugs moulded in situ, e.g. during production of container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1459Coating annular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20Inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2623/00Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2623/04Polymers of ethylene
    • B29K2623/06PE, i.e. polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2623/00Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2623/10Polymers of propylene
    • B29K2623/12PP, i.e. polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12Paper, e.g. cardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7162Boxes, cartons, cases
    • B29L2031/7166Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

An opening device for a package made of a sheet packaging material (2) - said sheet packaging material (2) comprising at least a first layer (4) and a second layer (5a, 5b, 6, 5c), and having a hole (9) formed through said first layer (4) and sealed by a cover portion (10) of said second layer (5a, 5b, 6, 5c) - is made of plastic material molded onto said cover portion (10), and in turn comprises a spout (12) defining a pouring opening (16) and a wall portion (11) closing said pouring opening (16), said wall portion (11) defining, together with said cover portion (10), a user-removable sealing portion (15) of said spout (12), a weakening region (14) being interposed between said wall portion (11) and said spout (12) and said cover portion (10) covering said weakening region (14); a molding apparatus for molding an opening device (3) on a sheet packaging material is also disclosed.

Description

Shedding motion and the equipment for moulded openings device on flaky packaging material
Technical field
The present invention relates to a kind of shedding motion, obtain especially by moulding of plastics materials on flaky packaging material Shedding motion.The invention still further relates to a kind of equipment for moulded openings device on flaky packaging material.
Background technology
It is known that many pourable food (such as fruit juice, UHT (superhigh temperature process) milk, wine, tomato sauce etc.) The packing and selling made with aseptic packaging material.
The representative instance of such packaging be referred to as Tetra Brik Aseptic (registered trade mark) for liquid Or the packaging of the parallelepiped shape of pourable food, it is made by being folded and sealed against laminated strips packaging material.
Packaging material have the multiple structure consisting essentially of the basic unit for rigidity and intensity, and described basic unit can include Fibrous material layer (for example, paper) or mineral-filled polypropylene material;With the multiple heat-seal plastic materials covering basic unit both sides Laminate layers (for example, polyethylene film).
In the case of the aseptic packaging for long-storage products (such as UHT milk), packaging material also include choke Material layer (for example, aluminium foil or ethyl vinyl alcohol (EVOH) film), described gas-barrier material stacking is added on heat-seal plastic material layer, And and then covered by another heat-seal plastic material layer, this another heat-seal plastic material layer forms the final bag contacting food Dress inner surface.
This packaging generally produces on fully automatic packaging machines, is formed by coiled material type feeding packaging material on this packer Continuous pipe;Packaging material web sterilizes in packer, for example, by applying chemosterilant (for example, hydrogenperoxide steam generator) Sterilizing, removes (for example, by heating evaporation) described biocide from the surface of packaging material after the completion of sterilizing;And so go out The packaging material web of bacterium is maintained in the gnotobasiss of closing, and longitudinal folding and sealing is to form vertical tube.
Pipe is filled with sterilized or through sterile-processed food, and seal and with tailing edge at equal intervals cross-sectional cut with shape Become form pillow packs, then described form pillow packs are folded mechanically to form for example substantially parallel hexahedral shape accordingly completing Packaging.
In order to open above-mentioned packaging it has been proposed that various solution, can again cover including be made up of plastic material Tight shedding motion, described shedding motion consists essentially of limited hole and is installed to the spout in the hole in the wall of packaging, with And coordinate spout and close (for example, spiral or hinged) lid that can remove of spout outside.
EP-A-2008787 discloses a kind of prelami-nated hole for shedding motion direct injection is molded in packaging material On method and apparatus, described in advance lamination hole only formed in basic unit and be included other laminate layers of gas-barrier material layer The hole covering.
In practice, melted plastic material is injected on the side of prelami-nated hole to be covered until its circular periphery Part, and form plastic material bits shape (confetti) part being directly attached to prelami-nated hole by this way;Then compel Make melted plastic material pierce through prelami-nated hole in such annular peripheral part, topple over spout with form shedding motion, described Topple over spout to project from the opposite side of prelami-nated hole and pass through to be suitable to be torn the annular of the small cross sections opening packaging by user Film coupling part is attached to this bits shape part.
By this way, the material forming prelami-nated hole is pierced first and and then is formed the plastic material of spout again Secondary sealing.Therefore, obtained packaging has gas barrier properties.
Content of the invention
It is an object of the invention to the gas barrier properties of shedding motion known to improving.
According to the first aspect of the invention, there is provided a kind of shedding motion as claimed in claim 1.
According to the second aspect of the invention, provide one kind as claimed in claim 8 for mould on flaky packaging material The equipment of shedding motion processed.
Brief description
It is illustrated by way of example some preferred, nonrestrictive embodiments of the present invention with reference to the accompanying drawings, wherein:
Fig. 1 shows the seal-packed broken section side-looking being made up for pourable food of flaky packaging material Figure, described flaky packaging material is molded with the first embodiment of the shedding motion according to the present invention;
Fig. 2 shows the section of the packaging flaky packaging material of Fig. 1 before shedding motion is molded;
Fig. 3 to Fig. 6 shows cutting of during the consecutive steps of the process of the moulded openings device flaky packaging material of Fig. 2 Face;
Fig. 7 shows the seal-packed broken section side-looking being made up for pourable food of flaky packaging material Figure, described flaky packaging material is molded with the second embodiment of the shedding motion according to the present invention;
Fig. 8 shows the section of the flaky packaging material of Fig. 7 during the step of the process of moulded openings device;
Fig. 9 shows the seal-packed broken section side-looking being made up for pourable food of flaky packaging material Figure, described flaky packaging material is molded with another shedding motion according to the present invention;
Figure 10 shows the seal-packed broken section side-looking for pourable food being made up of flaky packaging material Figure, described flaky packaging material is molded with the 3rd embodiment of the shedding motion according to the present invention;
Figure 11 shows the section of the flaky packaging material of Figure 10 during the step of the process of moulded openings device;
Figure 12 shows the prior art during the step of the process being molded into shedding motion on flaky packaging material The section of mould.
Specific embodiment
Reference 1 in Fig. 1 represents packing for pourable food on the whole, and it is by multilayer chip packing timber Expect that 2 make, and by molding (especially by injection-molded), the shedding motion 3 of plastic material be applied to this to pack On.
In shown example, packaging 1 is parallelepiped shape and is trade name Tetra Brik Aseptic The type of (registered trade mark).However, other types of packaging can also be applied to according to the shedding motion of the present invention.
With particular reference to Fig. 2, packaging material 2 include being filled out by fibrous material (for example, paper) or mineral for rigidity and intensity The basic unit 4 that the polypropylene material filling is made, and made and covered by heat-sealable plastic material (for example, polyethylene film) First cover layer 5a of basic unit 4 both sides and the second cover layer 5b.
In the case of the sterile chamber for long-storage products (such as UHT milk), packaging material 3 also include by hindering The barrier layer 6 that gas material (for example, aluminium foil or ethyl vinyl alcohol (EVOH) film) is made, described barrier layer 6 is superimposed upon the second covering On layer 5b, and and then the 3rd cover layer 5c that is made up of heat-sealable plastic material (for example, polyethylene film) cover, the Three cover layer 5c form the final inner surface of container contacting food.
In other words, when manufacturing the packaging material 3 of continuous sheet form, the first cover layer 5a, the second cover layer 5b, resistance Barrier 6 and the 3rd cover layer 5c limit the laminate layers being applied to basic unit 4.
Packaging material 2 be additionally included in be equally spaced on the longitudinal direction A of packaging material 2 multiple can remove part 8 ( In figure only illustrates one), and subsequently can remove moulded openings device 3 in part 8 described.
For simplicity, it is related to one in following description section and can remove part 8 and a shedding motion 3.
In the example shown, part 8 can be removed by so-called prelami-nated hole (that is, through basic unit 4 shape of packaging material 2 The hole (or opening) 9 becoming and being covered by above-mentioned laminate layers) limit so that hole 9 is sealed by corresponding sheet material covering part 10.
In unshowned alternate embodiments, covering part 10 even can be only by one or some above-mentioned laminate layers limits Fixed.For example, covering part 10 can be only made up of gas-barrier material.
In another alternate embodiments unshowned, covering part 10 can by be fixed to packaging material 2 remaining Partial paster (patch) limits with sealing hole, and in this case, described hole passes through the whole thickness of packaging material 2 to be formed.
Especially as shown in figure 1, shedding motion 3 has the axis B of the longitudinal direction A perpendicular to packaging material 2 and basic Upper inclusion adheres to the wall portion 11 of the first side 10a of covering part 10, and in this example illustrating, described side is finally towards packaging 1 inside.Shedding motion 3 also includes being fixed on packaging material 2 and limit the tubulose spout 12 of opening 16 around hole 9, leads to Cross this opening 16 and pour out food from packaging 1.Spout 12 extends through covering part 10, so that the first side from covering part 10 The 10a and second side 10b relative with the first side 10a projects.Shedding motion 3 also includes removably being assembled to spout 12 to close The lid 13 (Fig. 1) of opening 16.
More specifically, wall portion 11 and spout 12 are molded into one.Atenuator region 14 is between wall portion 11 and spout 12. Lid 13 is formed separately with the entirety including wall portion 11 and spout 12.
Wall portion 11 limits the hermetic unit 15 of the opening 16 of sealing spout 12 together with covering part 10.
Especially as shown in figure 1, spout 12 includes the annular flange portion 17 being fixed on packaging material 2 around hole 9.Spout 12 also include cylindrical cervical region 18, and described cervical region 18 is axially projecting and extend through from the inside edge of flange portion 17 The peripheral annular portion of covering part 10.In other words, cervical region 18 projects from packaging material 2 on the second side 10b.
As shown in figure 1, wall portion 11 and flange portion 17 are engaged by atenuator region 14, atenuator region 14 is by annular section 19 Limit, the thickness of annular section 19 is less than the thickness of wall portion 11 and the thickness of flange 17.When user first switches on packaging 1 When, annular section 19 (that is, atenuator region 14) can easily tear, so that hermetic unit 15 is separated with spout 12.
On the side towards lid 13, wall portion 11 has the prominent draw ring 21 of one, by described draw ring 21 along annular Hermetic unit 15 is separated by part 19 (i.e. atenuator region 14) with spout 12, thus opening opening 16 to topple over product.
More specifically, draw ring 21 extends and at predetermined distances with cervical region 18 in the inside of cervical region 18, and institute State draw ring 21 and wall portion 11 is connected to by protuberance (tab) 22.
As shown in figure 1, lid 13 is screw lid, and there is the cylindrical side wall 23 with female thread 24, this female thread 24 Engage the corresponding external screw thread 25 on the cervical region 18 of spout 12.
On packaging material 2, the method for injection-molded shedding motion 3 is as follows.
In structure shown in Fig. 2, packaging material 2 A feeding in a longitudinal direction, to arrange energy inside moulding unit 30 Remove part 8.
With reference to Fig. 3 to Fig. 6, moulding unit 30 includes multiple moulds, the particularly first mould 30a, the second mould 30b, the Three mould 30c and the 4th mould 30d, the plurality of mould is coaxial with the axis B of the shedding motion 3 being formed, positioned at bag The both sides of package material 2, and can move between configuration (not shown) and closed configuration (Fig. 3 to Fig. 6) opening, open configuration Enable packaging material 2 A feeding along the longitudinal direction, the plurality of mould limits and is filled with molten plastic material in the closed configuration The Guan Bi mould chamber 31 of material.
In the example shown, the first mould 30a limits the first die device, and the second mould 30b, the 3rd mould 30c and the 4th mould 30d limits the second die device being located on the opposite side of packaging material 2 with respect to the first die device. As shown in Fig. 3 is to 6, the 3rd mould 30c is disposed radially between the second mould 30b and the 4th mould 30d.
Mold cavity 31 includes the basically in a disc Part I 32 with axis B;With axis B coaxially from Part I The cylindrical Part II 33 that the side of 32 flat peripheral annular section 34 extends;And limit draw ring 21 and relatively In peripheral annular portion 34 from Part II 33 identical side and extend from the inner radial point of Part I 32 the Three parts 35.
Part I 32 includes the core 36 extending towards Part II 33 and Part III 35, this core 36 It is connected to peripheral annular portion 34, and be also connected to melted plastic material injection catheter 37.
In Fig. 3 to Fig. 6, Part I 32 is by the first mould 30a on side and by second on the opposite sides Mould 30b, the 3rd mould 30c and the 4th mould 30d limit.Part II 33 is limited by the second mould 30b and the 3rd mould 30c Fixed.Part III 35 is limited by the 3rd mould 30c and the 4th mould 30d.Injection catheter 37 extends through the first mould 30a.
As detailed below, Part I 32 limits the flange portion 17 of wall portion 11 and spout 12, and second Divide the cervical region 18 of 33 restriction spouts 12.
For moulded openings device 3, in the configuration of Fig. 3, packaging material 2 stop inside moulding unit 30, wherein cover Cover 10 is not contained in the Part II 32 of mold cavity 31 completely and completely with damaging.More specifically, covering part 10 It is positioned such that side 10b towards the Part II 33 of mold cavity 31 and Part III 35.
In this, melted plastic material is expelled to mold cavity along injection catheter 37 from the side 10a of covering part 10 In 31 Part I 32, it is progressively filled towards annular section 34 from core 36.
Covering part 10 is pushed against by the pressure of the melted plastic material being expelled in the Part I 32 of mold cavity 31 Four mould 30d are so that the side 10b of covering part 10 contacts the 4th mould 30d.
In this stage, the 3rd cover layer 5b of covering part 10 is completely molten with the plastic material being expelled in mold cavity 31 Change.
Melted plastic material radial expansion in Part I 32, until it eventually arrives at Part I 32 and Part III 35 intersection, in intersection, the covering part 10 not over the 3rd mould 30c and the 4th mould 30d solid support is passed through The pressure of melted plastic material is fitly penetrated, and therefore melted plastic material filling Part III 35 is to form draw ring 21.
In an identical manner, when melted plastic material reaches in the intersection of Part I 32 and Part II 33 During annular section, covering part 10 is fitly pierced through by the pressure of melted plastic material, and therefore melted plastic material flows into Part II 33 is to form cervical region 18.
In other words, melted plastic material is between the Part I 32 and Part II 33 of mold cavity 31 and first The intersection between 32 and Part III 35 is divided to pierce through covering part 10, to form through hole, described through hole is subsequently by plastic material Sealing is to recover the integrity of packaging material 2 completely.
Once filling mold cavity 31 plastic material solidification, the first mould 30a, the second mould 30b, the 3rd mould 30c and 4th mould 30d moves to and opens configuration, feeds packaging material 2 again with A in a longitudinal direction, takes out tool from moulding unit 30 Have molding respective openings device 3 thereon can remove part 8, and is executed another energy of another moulding process thereon Remove in part 8 insertion mold cavity 31.
As shown in figure 1, atenuator region 14 is limited towards the first side 51 of covering part 10 and base portion 52 by wall portion 11.Base Portion 52 second side 53 more relative with the first side 51 than wall portion 11 is closer to the first side 51.Base portion 52 is arranged essentially parallel to the first side 51 and second side 53.
Shedding motion 3 includes extending from the second side 53 and being limited by base portion 52, the first wall elements 55 and the second wall elements 56 Recess 54.
First wall elements 55 are substantially alignd with the inwall 57 of cervical region 18.First wall elements 55 are substantially perpendicular to base portion 52.First wall elements 55 are also substantially perpendicular to the first side 51 and the second side 53.
Second wall elements 56 extend and limit the lateral side regions of wall portion 11 between base portion 52 and the second side 53.Second wall unit Part 56 tilts with respect to base portion 52 and the second side 53, the second wall elements 56 from base portion 52 towards the second side 53 mobile when from first The distance of wall elements 55 increases.
Covering part 10 covers atenuator region 14.Especially, the end regions 49 of covering part 11 extend on base portion 52. Covering part 10 extends to inwall 57.
As shown in Figures 3 to 6, the first mould 30a includes extending in mold cavity 31 and towards the 3rd mould 30c extension Protuberance 70.Protuberance 70 includes ridge 40, and ridge 40 has the annular shape of the longitudinal axis around moulding unit 30.
Ridge 40 is arranged in Part I 32 and the intersection of Part II 33.
Ridge 40 is limited by the first wall 41 being substantially aligned with the side wall 42 of the 3rd mould 30c, and side wall 42 limits Part II 33.
Ridge 40 is limited by the second wall 43 further, and the second wall 43 is basically parallel to the 3rd mould limiting Part I 32 The diapire 44 of 30c.Second wall 43 is substantially perpendicular to the first wall 41.
Side wall 42 is substantially perpendicular to diapire 44.
Ridge 40 is limited by the 3rd wall 45 of the basal wall 46 extending to the first mould 30a from the second wall 43 further, basal wall 46 Towards diapire 44 and limit Part I 32.3rd wall 45 is so that the 3rd wall 45 is when moving towards basal wall 46 from the second wall 43 Increase such mode to tilt with a distance from the first wall 41.
Ridge 40 and the 3rd mould 30c (more specifically, diapire 44 and second wall 43) limit little for melted plastic material Cross-sectional passage 47.Plastic material in small bore passage 47 is once solidification is formed for atenuator region 14.During moulding, plastics material Material passes through small bore passage 47 to reach Part II 33 from Part I 32.The end regions 49 of covering part 10 are received within little In cross-sectional passage 47.So, when plastic material solidifies, end regions 49 cover atenuator region 14.
Stated differently, since protuberance 70 (i.e. ridge 40) is arranged in the first mould 30a, so covering part 10 extends to On atenuator region 14, therefore increased the vapor barrier properties of shedding motion 3.Especially, covering part 10 is in the whole length of diapire 44 Side wall 42 is extended up on degree.
Figure 12 show moulding unit 30^ according to prior art (identical reference have been used for identical part and Assembly), the protuberance 70^ wherein with the shape of ridge 40^ extends from the 3rd mould 30c^.
In this case, atenuator region 14^ is uncovered part 10^ and covers.In addition, covering part 10^ does not extend to Inwall 57^.
According to the present invention, the gas barrier properties of shedding motion 3 greatly increase, because covering part 10 is also forming shedding motion Plastic material there is the region (that is, atenuator region 14) of minimum thickness upper extend.In the thinner place of plastic material, gas passes Defeated ratio is higher, it is therefore clear that the atenuator region 14^ of known shedding motion is key point because its directly expose and Do not protected by barrier layer for gases.
When shedding motion 1 first switches on, atenuator region 14 is destroyed, but covers the covering part 10 of atenuator region 14 It is not destroyed.So, the residue of covering part 10 does not protrude in opening 16.
Fig. 7 shows another embodiment of shedding motion 1.Use with the reference identical reference in Fig. 1 In the corresponding part of expression and assembly.
In the embodiment shown in figure, atenuator region 14 by wall portion 11 towards covering part 10 the first side 51 He Base portion 52 ' limits.Base portion 52 ' second side 53 more relative with the first side 51 than wall portion 11 is closer to the first side 51.Base portion 52 ' base Parallel to the first side 51 and the second side 53 on this.
Shedding motion 1 includes extending and by base portion 52 ', the first wall elements 55 ' and the second wall elements 56 ' limit from the second side 53 Fixed recess 54 '.
First wall elements 55 ' are arranged essentially parallel to the inwall 57 of cervical region 18.First wall elements 55 ' are than inwall 57 closer to axle Line B.First wall elements 55 ' are substantially perpendicular to base portion 52 '.First wall elements 55 ' are also substantially perpendicular to the first side 51 and Two sides 53.First wall elements 55 ' limit the lateral side regions of wall portion 11.
Second wall elements 56 ' extend between the bottom surface 58 of base portion 52 ' and flange portion 17, and with respect to base portion 52 ' Tilt with bottom surface 58, the second wall elements 56 ' are increasing when base portion 52 ' moves towards bottom surface 58 with a distance from the first wall elements 55 ' Greatly.
The point M that base portion 52 ' is intersected with the second wall elements 56 ' is substantially alignd with inwall 57.
Covering part 10 covers atenuator region 14.Especially, the end regions 49 of covering part 11 prolong on base portion 52 ' Stretch.Covering part 10 extends to inwall 57.
Fig. 8 shows another embodiment of moulding unit 30.With the reference identical accompanying drawing mark in Fig. 3 to Fig. 6 Remember for representing corresponding part and assembly.
In embodiment shown in Fig. 8, the first mould 30a includes extending in mold cavity 31 and towards the 3rd mould The protuberance 70 ' that 30c extends.Protuberance 70 ' includes ridge 40 ', and ridge 40 ' has the annular of the longitudinal axis around moulding unit 30 Shape.
Ridge 40 ' is arranged in Part I 32 and the intersection of Part II 33.
Ridge 40 ' is limited by the first wall 41 ' of the side wall 42 being arranged essentially parallel to the 3rd mould 30c, and side wall 42 limits second Part 33.First wall 41 ' is than side wall 42 closer to axis B.
Ridge 40 is limited by the second wall 43 ' further, and the second wall 43' is arranged essentially parallel to the 3rd mould limiting Part I 32 The diapire 44 of tool 30c.Second wall 43 ' is substantially perpendicular to the first wall 41 '.
Side wall 42 is substantially perpendicular to diapire 44.
Ridge 40 ' is defined by the 3rd wall 45 ' further, and described 3rd wall 45 ' extends to the first mould 30a's from the second wall 43 Another basal wall 48 towards Part II 33.3rd wall 45 ' tilts by this way:3rd wall 45 ' is from the second wall 43 ' court To the distance increase away from the first wall 41 ' when mobile of another basal wall 48.
The point P that second wall 43 ' is intersected with the 3rd wall 45 ' is substantially alignd with side wall 42.
Fig. 9 shows that shedding motion 3 (is used for representing corresponding part with the reference identical reference in Fig. 1 And assembly), wherein wall portion 11 and ledge 60 form as one, and ledge 60 extends through spout 12 and is intended to permanent Be connected to lid 13.
Two supports that ledge 60 includes circumferential body 61 and circumferential body 61 is integrally connected to wall portion 11 (leg)62.Especially, support 62 has first end 63 and the second end 64, and described first end 63 is integrally connected to circumferential body The 61 respective diameters opposite segments with respect to axis B, described second end 64 is integrally connected to wall portion 11.
As unshowned possible replacement scheme, support 62 can not also be diametrically relative to each other.
As unshowned another possible replacement scheme, ledge 60 can include two being angularly spaced from one another With upper bracket 62.
In the embodiment shown, shedding motion 3 also includes dish type welding promotion element 65, lid 13 is connected to prominent Go out part 60.
Lid 13 includes dish type end wall 66 and circumferential rib 67, and circumferential rib 67 axially projects from end wall 66 towards the inside of lid 13 And limit the seat 68 promoting element 65 for accommodating welding.
Welding promotes element 65 by different from lid 13 and be permanently attached to cover 13 multi-layer sheet element 69 and limit.
Especially, sheet material element 69 includes conductive material layer (for example, aluminium foil), and covers conductive material layer both sides extremely Few two-layer heat-sealable plastic material (for example, polyethylene film).
When lid 13 is applied on spout 12, unit is promoted in welding by inductance generating element (such as coil, not shown) Electric current is produced (particularly in the conductive layer of sheet material element 69) in part 65.The heat being produced by electric current welds lid by sensing heating 13 and ledge 60.Therefore, lid 13 and hermetic unit 15 are securely connected to one another.
When user's (in the embodiment shown) removes (that is, unscrewing) lid 13, hermetic unit 15 departs from from cervical region 18. In this case, shedding motion 3 is the closure member that a step is opened.
In unshowned another embodiment, ledge 60 is welded direct to lid 13 and is not inserted into welding and promotes element 65.
In the shedding motion of Fig. 9, recess 54, atenuator region 14 and covering part 11 are as in the embodiment of Fig. 1 Arrangement.
In an identical manner, the shedding motion of Fig. 9 can arrange the recess 54, weak just like arrangement in the embodiment of Fig. 7 Change region 14 and covering part 11.
Similarly, the shedding motion of Fig. 9 can arrange just like the atenuator region 14 arranged in the embodiment of Figure 10 and cover Cover 11, it will be disclosed in the following.
Figure 10 shows another embodiment of shedding motion 1.It is used for representing corresponding to identical reference in Fig. 1 Part and assembly.
In embodiment shown in Figure 10, atenuator region 14 by wall portion 11 towards covering part 10 the first side 51 He Base portion 52 " limits.Base portion 52 " second side 53 more relative with the first side 51 than wall portion 11 is closer to the first side 51.Base portion 52 " base Parallel to the first side 51 and the second side 53 on this.
Base portion 52 " is aligned with the bottom surface 58 of flange portion 17.
Base portion 52 " and the second side 53 are connected by lateral subelement 72.
Lateral subelement 72 is substantially perpendicular to base portion 52 ".
Lateral subelement 72 is also substantially perpendicular to the first side 51 and the second side 53.Lateral subelement 72 limits wall portion 11 lateral side regions.
Lateral subelement 72 is than inwall 57 closer to axis B.
In fact, base portion 52 ", the second side 53 and lateral subelement 72 formed with respect to the first side 51 and covering part 10 relative stairway elements 73.
Covering part 10 covers atenuator region 14.Especially, the end regions 49 of covering part 11 are in base portion 52 " on prolong Stretch.Covering part 10 extends up to inwall 57.
Figure 11 shows another embodiment of moulding unit 30.With the reference identical accompanying drawing mark in Fig. 3 to Fig. 6 Remember for representing corresponding part and assembly.
In embodiment shown in Figure 11, the first mould 30a includes extending in mold cavity 31 and towards the 3rd mould The protuberance 70 that 30c extends.Protuberance 70 is limited by the stepwise device 74 that the longitudinal axis around moulding unit 30 extend.
Stepwise device 74 is arranged in Part I 32 and the intersection of Part II 33.
Stepwise device 74 by first diapire 75 of the first mould 30a, second diapire 76 of the first mould 30a and is arranged on Side wall member 77 between first diapire 75 and the second diapire 76 limits.
First diapire 75 to the second diapire 76 closer to the 3rd mould 30c, particularly closer to diapire 44.
Second diapire 76 to the first diapire 75 is closer to the longitudinal axis of moulding unit 30.
Side wall member 77 laterally, is especially substantially perpendicular to the first diapire 75 and the second diapire 76 is arranged.
Side wall member 77 laterally, the side wall 42 that is arranged essentially parallel to the 3rd mould 30c arrange, side wall 42 limits second Divide 33.
Side wall 42 is substantially perpendicular to diapire 44.
Side wall member 72 than side wall 42 closer to moulding unit 30 longitudinal axis.
Stepwise device 74 and the 3rd mould 30c (more specifically, diapire 44 and first diapire 75) define for molten plastic The small bore passage 47 of material.Plastic material in small bore passage 47 is once solidification is formed for atenuator region 14.In the molding phase Between, plastic material passes through small bore passage 47 to reach Part II 33 from Part I 32.The end regions 49 of covering part 10 It is contained in small bore passage 47.So, when plastic material solidifies, end regions 49 cover atenuator region 14.
Stated differently, since protuberance 70 (that is, ledge structure 74) is arranged in the first mould 30a, covering part 10 is prolonged Reach the gas barrier properties that shedding motion 3 therefore be increased on atenuator region 14.Especially, covering part 10 is whole in diapire 44 Side wall 42 is extended up on individual length.
Obviously, shedding motion as described herein and molding equipment can be changed, will without deviating from appended right Seek the scope of middle restriction.
Especially, shedding motion 3 can on packaging material 2 compression molded rather than injection-molded.In this case, Wall portion 11 and spout 12 be integrally formed compression molded on packaging material 2.

Claims (16)

1. a kind of shedding motion of the packaging for being made up of flaky packaging material (2), described flaky packaging material (2) is at least wrapped Include ground floor (4) and the second layer (5a, 5b, 6,5c), and have through described ground floor (4) formation and by the described second layer The hole (9) that the covering part (10) of (5a, 5b, 6,5c) seals, described shedding motion (3) is by being molded into described covering part (10) On plastic material make, and include spout (12) and the described pouring opening of the closing (16) limiting pouring opening (16) successively Wall portion (11), the user that described wall portion (11) limits described spout (12) together with described covering part (10) can remove sealing Point (15), atenuator region (14) is arranged between described wall portion (11) and described spout (12) it is characterised in that described covering part (10) are divided to cover described atenuator region (14).
2. shedding motion according to claim 1, wherein said covering part (10) extends to the described pouring opening of restriction (16) inwall (57) of described spout (12).
3. shedding motion according to claim 1 and 2, wherein said atenuator region (14) by described wall portion (11) towards First side (51) of described covering part (10) and base portion (52;52’;52 ") limit;Described base portion (52;52’;52 ") than described Second side (53) relative with described first side (51) of wall portion (11) is closer to described first side (51).
4. shedding motion according to claim 3, the end regions (49) of wherein said covering part (10) are in described base Portion (52;52’;52 ") upper extension.
5. the shedding motion according to claim 3 or 4, it further includes recess (54;54 '), described recess (54; 54 ') extend and by described base portion (52 from described second side (53);52 '), the first wall elements (55;55 ') and the second wall elements (56,56') limit.
6. the inwall of shedding motion according to claim 5, wherein said first wall elements (55) and described spout (12) (57) basic be aligned, and described second wall elements (56) extends between described base portion (52) and described second side (53) and limits The lateral side regions of fixed described wall portion (11), described second wall elements (56) are with respect to described base portion (52) and described second side (53) Tilt, described second wall elements (56) are first away from described first wall when described base portion (52) moves towards described second side (53) The distance of part (55) increases.
7. shedding motion according to claim 5, wherein said first wall elements (55 ') are arranged essentially parallel to described spout (12) inwall (57), described first wall elements (55 ') than described inwall (57) closer to described shedding motion (3) axis And limit the lateral side regions of described wall portion (11), and described second wall elements (56 ') are in described base portion (52 ') and described (B) Extend between the bottom surface (58) of the outward flange (17) of shedding motion and incline with respect to described base portion (52 ') and described bottom surface (58) Tiltedly, described second wall elements (56 ') from described base portion (52 ') towards described bottom surface (58) mobile when from described first wall elements The distance of (55 ') increases, and the point (M) that intersects with described second wall elements (56 ') of described base portion (52 ') and described inwall (57) basic be aligned.
8. the shedding motion according to claim 3 or 4, wherein lateral subelement (72) is in described base portion (52 ") and institute State and extend between the second side (53), described base portion (52 "), described second side (53) and described lateral subelement (72) with respect to Described first side (51) forms the stairway elements (73) relative with described covering part (10).
9. shedding motion according to claim 8, the outward flange (17) with described shedding motion for the wherein said base portion (52 ") Bottom surface (58) be aligned, described lateral subelement (72) limits the lateral side regions of described wall portion (11), and than described spout (12) inwall (57) is closer to the axis (B) of described shedding motion (3).
10. a kind of molding equipment being used in the upper moulded openings device (3) of flaky packaging material (2), described packaging material (2) are extremely Include ground floor (4) and the second layer (5a, 5b, 6,5c) less, and have through described ground floor (4) formation and by the described second layer The hole (9) that the covering part (10) of (5a, 5b, 6,5c) seals, described shedding motion (3) includes limiting the spray of pouring opening (16) Mouthful (12), close described pouring opening (16) wall portion (11) and be arranged on described wall portion (11) and described spout (12) it Between atenuator region (14), on the opposite side that described molding equipment includes be arranged in described flaky packaging material (2) and can It is set as opening the first die device (30a) and second die device (30b, 30c, 30d) of configuration and closed configuration, described beat Open configuration to make it possible to feed described packaging material (2), in described closed configuration, described first die device (30a) and institute State the second die device (30b, 30c, 30d) and limit and accommodate described covering part (10) and be suitable to the filling of described plastic material Mold cavity (31), to limit described shedding motion (3) when plastic material solidifies, described mold cavity (31) includes covering described in receiving Cover (10) and be arranged to limit first chamber (32) of described wall portion (11), be arranged to limit the second of described spout (12) Chamber (33), described second chamber (33) is limited by described second die device (30b, 30c, 30d), and wherein said molding equipment also wraps Include protuberance (70), described protuberance (70) extends in described mold cavity (31) and define small bore passage (47), described little Described first chamber (32) is connected to described second chamber (33) and is arranged to limit described atenuator region (14) by cross-sectional passage (47), It is characterized in that, described protuberance (70) extends from described first die device (30a).
11. molding equipments according to claim 10, wherein said protuberance (70) includes ridge (40,40 '), described ridge (40,40 ') are by the first wall (41;41 '), it is arranged essentially parallel to described second die device limiting described Part I (32) Second wall (43 of the diapire (44) of mould element (30c);43 ') and the 3rd wall (45;45 ') limit.
12. molding equipments according to claim 11, wherein said second wall (43;43 ') it is substantially perpendicular to described One wall (41;41’).
13. molding equipments according to claim 11 or 12, wherein said first wall (41) and described mould element (30d) Side wall (42) basic be aligned, described side wall (42) limits described Part II (33), and described 3rd wall (45) is from described second Wall (43) extend to described first die device (30a) towards described diapire (44) and limit the base of described Part I (32) Wall (46), described 3rd wall (45) is so that described 3rd wall (45) is moving towards described basal wall (46) from described second wall (43) Increase such mode when dynamic to tilt with a distance from described first wall (41).
14. molding equipments according to any one of claim 11 to 13, wherein said first wall (41') is substantially parallel In the side wall (42) of described mould element (30d), described side wall (42) limits described Part II (43), and described first wall (41 ') than described side wall (42) closer to described molding equipment axis (B), described 3rd wall (45 ') is from described second wall (43) extend to another basal wall (48) towards described Part II (33) of described first die device (30a), the described 3rd Wall (45 ') so that described 3rd wall (45 ') from described second wall (43 ') towards described another basal wall (48) mobile when from described The distance of the first wall (41 ') increases such mode and tilts, the point that described second wall (43 ') is intersected with described 3rd wall (45 ') (P) substantially it is aligned with described side wall (42).
15. molding equipments according to claim 10, wherein said protuberance (70) includes stepwise device (74), described rank First diapire (75) by described first die device (30a) for the ladder device (74), the second bottom of described first die device (30a) Wall (76) and the side wall member (77) being arranged between described first diapire (75) and described second diapire (76) limit, institute State the first diapire (75) than described second diapire (76) closer to the mould element (30c) of described second die device diapire (44).
16. molding equipments according to claim 15, wherein said second diapire (76) is than described first diapire (75) more Near the longitudinal axis of described molding equipment, described side wall member (77) is transverse to described first diapire (75) and described second bottom Wall (76) arrange, and than described mould element (30c) side wall (42) closer to described longitudinal axis, described side wall (42) limit Fixed described Part II (33).
CN201580022724.9A 2014-06-10 2015-05-28 Opening device and apparatus for molding opening device on sheet packaging material Active CN106458361B (en)

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EP14171690.2A EP2955122B1 (en) 2014-06-10 2014-06-10 Opening device and apparatus for moulding an opening device on a sheet packaging material
EP14171690.2 2014-06-10
PCT/EP2015/061781 WO2015189036A1 (en) 2014-06-10 2015-05-28 Opening device and apparatus for moulding an opening device on a sheet packaging material

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BR112016027471A2 (en) 2017-08-15
CN106458361B (en) 2020-03-24
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US20170113834A1 (en) 2017-04-27
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BR112016027471B1 (en) 2022-03-29

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